Home / 7,140.20-10,711.44-2,208.68

Finding the Fourth Proportional to 7,140.20, 10,711.44 and 2,208.68

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Solution

The fourth proportional to 7,140.20, 10,711.44 and 2,208.68 is: 3,313.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.20 : 10,711.44 = 2,208.68 : x
  2. Step 2: Convert to fraction form
    7,140.20/10,711.44 = 2,208.68/x
  3. Step 3: Cross multiply
    7,140.20x = 10,711.44 × 2,208.68
  4. Step 4: Simplify right side
    7,140.20x = 23,658,143.30
  5. Step 5: Solve for x
    x = 23,658,143.30/7,140.20
  6. Step 6: Final answer
    x = 3,313.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.